When I was living in Ft. Collins, CO. I once found the biggest yellow mayfly I had ever seen on a warm water lake. If memory serves me correct it's the same species. Only saw the one. Some people were doubtful but I also caught lightning bugs there as well. If only cameras where so readily available then.lol

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Nice fish! Do you have anymore pictures of it lying in the dirt? How about one dangling from your finger in the gills?

I came across a similar hatch when I was fishing a lake in Central Vermont over the 4th. Hatch started about dusk and fish were rising to them. They were pale yellow which sort of threw me off since the only Hexes I've gotten a good look at were on a lake in Northern Ontario and they were olive-gray color. Caught one little smallmouth on a yellow spider, and missed a couple of more. The next evening when I came back with some large soft hackles there weren't near as many mayflies or fish rising.

When I was living in Ft. Collins, CO. I once found the biggest yellow mayfly I had ever seen on a warm water lake. If memory serves me correct it's the same species. Only saw the one. Some people were doubtful but I also caught lightning bugs there as well. If only cameras where so readily available then.lol

I'm a little late on this, but I've seen them here in northeast Kansas, not far from delopez. I've had a very knowledgeable person say they are more common here than people realize, but due to night hatches, they go relatively unobserved.

Hexagenia make for excellent smallmouth fishing, btw. I learned that researching and fishing a Michigan smallie stream.